// Declare pixel shader version 1.0
ps.1.1



def c1, 0.5, 0.5, 0.5, 0.5
def c2, 0.7, 0.7, 0.7, 0.7
def c3, 1.0, 1.0, 1.0, 1.0



tex t0



texm3x2pad  t2,  t0_bx2
texm3x2tex  t3,  t0_bx2



mov r0, t3


dp3  r1.rgba, t0_bx2, v0_bx2



mad  r0.a, r1.a, c1.a, c1.a
mul  r0.a, r0.a, r0.a
mul  r0.a, r0.a, r0.a

// ¾ËÆÄ ¼¼Æà 
// use this line to set alpha to 0
;mov  r0.a, 1-c3